effect of phenolic compounds on the synthesis of gold nanoparticles and its catalytic activity in the reduction of nitro compounds

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ID: 201549
2018
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Ranked #10 of 133 articles by views in progress in neuro-psychopharmacology & biological psychiatry

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Abstract
Gold nanoparticles (AuNPs) were prepared using an eco-friendly approach in a single step by reduction of HAuCl4 with polyphenols from tea extracts, which act as both reducing and capping agents. The obtained AuNPs were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet–visible spectroscopy (UV–vis), and X-ray photoelectron spectroscopy (XPS). They act as highly efficient catalysts in the reduction of various aromatic nitro compounds in aqueous solution. The effects of a variety of factors (e.g., reaction time, type and amount of reducing agent, shape, size, or amount of AuNPs) were studied towards the optimization of the processes. The total polyphenol content (TPC) was determined before and after the catalytic reaction and the results are discussed in terms of the tea extract percentage, the size of the AuNPs, and their catalytic activity. The reusability of the AuNP catalyst in the reduction of 4-nitrophenol was also tested. The reactions follow pseudo first-order kinetics.
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alegria2018nanomaterialseffect Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Elisabete C. B. A. Alegria;Ana P. C. Ribeiro;Marta Mendes;Ana M. Ferraria;Ana M. Botelho do Rego;Armando J. L. Pombeiro
Journal progress in neuro-psychopharmacology & biological psychiatry
Year 2018
DOI
10.3390/nano8050320
URL
http://www.mdpi.com/2079-4991/8/5/320
Keywords
catalysis Phytochemicals gold nanoparticles reduction

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